Launder trough



W, H. SAYRE LAUNDER TROUGH Original Filed Feb. 14. 1920 g@ @QQ @Q @E Q Q M@ @QQ @@Q @Q liti Patented July 22, i924.

UNETD STATF iterate WILLIAM H. SAYRE, AOil? GLEN RIDGE, NEW JERSEY; WILLIAM HEYSHAB/I SAYRE, WILLIAM v.'lil. BEARD, AND ELIZABETH BARTHOLOIVIEW SAYRE EXECTORS 0F SAID WILLIAM H. SAYRE, DECEASED, ASSIGNORS T0 AMERICAN ABRASIVE METALS COMPANY, A CORPORATION 0F NEW YORK.

v LAUNDER THOUGH.

Application filed February 14, 1920, Serial No. 358,700. Renewed May 17, 1924.

To all whom t may concern:

Be it known that I, WILLIAM H. SAYRE, a citizen of the United States, residing at Glen Ridge, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Launder Troughs, of which the following is a specification, reference being had therein to the accompanying drawings. This invention relates to troughs and like receptacles, such as launder troughs, employed more particularly in mining localities for conveying the 'mixture of water and ore, or` rock fragments, slag and similar materials which it is necessary in mining operations tocarry from oneplace to another. These troughs are frequently made of wood, but more frequently they are made in more durable and lasting form of iron and consist usually of a flat bottom with uprising edge walls or anges thereby forming a fiat open shallow trough. In practice it is found that the abrading action of the mineral substances carried in the stream flowing v through the trough, causes rapid wear thereon and particularly on the bottom, with the result that the -trough after a comparatively short period becomes unfit for further use. rI`his necessitates frequent repairs or renewals which of course are attended with considerable expense, due to the cost of material, loss of time and interruption of the operations.

My invention aims to obviate this objection and the invention consists in providing the bottom of a metal trough with a series of inserts of a material harder than the metal of the bottom, and which are firmly embedded and fixedly held therein so as to be exposed on the surface of the bottom.

The inserts may be composed of different kinds of materials, and in di'erent forms, and applied in different ways, but I prefer to employ them in he form of distinct lumps of hardy abrasive material such as carborundum, alundum, corundum, or similar natural or artificial material in lump form and embedded in the bottom of the trough by casting the same in a suitable mold in which the lumps are properly disosed to be taken up by the casting and Ermly heldthereby and exposed on the surface of the bottom. It will be understood that when the inserts are thus incorporated, he materials mentioned as composing the inserts are Very hard and possess high resistant qualities against wear and are proof against impairment by the casting temperature of the metal of the trough. Consequently they are well adapted forthe purposes of my invention, and can be conveniently and quickly incorporated in the trough bottom in the casting operation.

In the accompanying drawings:

Fig. l is a top plan View of a section of a launder trough having my invention embodied therein;

Fig. 2 is a sectional perspective view of the same; v

Fig. 3 is a cross-section of a mold with the inserts disposed therein to be taken up by the metal of the casting in forming the trough. v

Referring to the drawings:

A designates a section of a launder trough of which there will be a number placed end to end to constitute a continuous trough structure. The sections are made of cast iron with a fiat bottom B and with upwardly extending edge walls or flanks C, so that when a number of them are placed end to end, a. flat shallow trough will be formed suitable for receiving a stream of mixed water and ore, or rock fragments or slag and like materials handled in mining and similar operations.

In carrying out my invention I apply to the bottom of the trough so that they will be distributed over the area of the same, a series of inserts D, of a material which is harder than the metal of the trough, and I preferably dispose these inserts in rows, in the present instance longitudinal rows in which the individual inserts are spaced apart longitudinally of the trough, or in transverse rows in which the individual inserts are spaced apart transversely of the trough, the said inserts being firmly embedded and held in the bottom andexposed on the surface of the same.

The inserts may be formed of various different materials such as corunduin, or carborundum, or alundum, or other hard natural or artificial material, but I prefer to employ distinct lumps of carborundum or alundum or corundum of substantial size as distinguished from comminuted particles,

and possessing an irre ular formation so that they will be grippe by the material of the bottom in which they may be incorporated in the operation of casting the trough, these materials being very hard and possessng high resistant qualities against wear, and being of a character which will not be. impaired or destroyed by the casting temperature'rof the metal. Thus disposed, the hard inserts will protect the bottom of the trough against rapid wear or deterioration by the abrasive action of the mineral substances of the stream flowing through the trough, with the result that the life of the trough will be greatly prolonged, and the necessity for frequent repairs, replacements and renewals and the consequent expense will be avoided.

By arranging the inserts in rows as above described, transverse and longitudinal intact portions E and F of the trough will be left. which will serve to maintain the strength and rigidity of the construction as a whole and will leave around the individual inserts, extensive and substantial areas of solid embedding metal.

Fig. 3 shows a mold suitable for casting the trough around the inserts. Here it will be seen that one surface G of the mold, that against which the bottom of the trough will be cast, has distributed'thereover the inserts D slightly embedded in the sand of the mold so that in the castingoperation, the metal forming the bottom of the casting will flow around the exposed portions of the inserts and they will become firmly embedded and gripped by the metal of the bottom asv is shown in Fig. 2, and will in the finished casting be exposed on the surface of the bottom.

In the foregoing description and accompanying drawmgs, I have set forth my invention in the articular detailed form and construction w `'ch I prefer to adopt. It

1. A launder trou h composed of a metal e body having in the ottom thereof a series of inserts of aj" material harder than the metal of the body, said inserts lbeing rmly embedded in said bottom.

2. A launder trough composed of a metal body having in the bottom thereof, rows of wear resistant inserts composed of a material harder than the metal of the body.

3. A launder trough composed of a metal body having in the bottom thereof, rows of wear resistant inserts of a material harder y than the metal of the body.

4. A launder trough composed of a metal body having inserts of carborundum embedded in the bottom, l

5. A launder trou hv com osed of a metal body having embed ed in t e bottom thereof, lumps of a material-harder than the material of the body.

6. A launder trough composed of ametal body havin embedded in the bottom thereof, distinct umps of a harder material than v the metal of the body, and which is proof against impairment by the casting temperature of the body metal.

7. As a new article of manufacture, a launder trough section composed of a metal body having a bottomand uprising edge flanges, and a series of inserts of a materialy harder than the metalof the body embedded in the bottom of the trough.

4In testimony whereof, I vhave aixed my signature hereto.

WILLIAM H. SAYRE. 

